<?php

/*
 * Copyright 2008 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#namespace tehframework\annotations\parsers\processors;

#use tehframework\annotations\parsers\ParserException;
#use tehframework\annotations\parsers\state\ParserState;
#use tehframework\annotations\parsers\state\StateParser;
#use tehframework\annotations\parsers\state\StateProcessor;

class AnnotationProcessor extends StateProcessor
{
	/**
	 * @param  char $token
	 * @param  StateParser $parser
	 * @throws ParserException
	 */
	public function process($token, StateParser $parser)
	{
		switch ($token)
		{
			case '<':
				$parser->changeState(ParserState::ANNOTATION_TYPE);
				break;
			
			case '[':
				$parser->changeState(ParserState::ANNOTATION_PARAMETER);
				break;
			
			case '(':
				$parser->changeState(ParserState::ANNOTATION_VALUE);
				break;
			
			case '>':
			case ']':
			case ')':
				if ($parser->nextToken === null)
				{
					$parser->changeState(ParserState::DOCBLOCK);
				}
				break;
			
			default:
				if (!ctype_space($token))
				{
					throw new ParserException(sprintf(
						'Unexpected use of [%s] character in annotation.', $token
					));
				}
				
				$parser->changeState(ParserState::DOCBLOCK);
				break;
		}
	}
}